Anti-theft alarm for bicycles



FIG. 1 is a perspective view;

FIG. 2 is a view from one side;

FIG. 3 is a view from the other side;

FIG. 4 is a front view;

FIG. 5 is a rear view;

FIG. 6 is a top view; and,

FIG. 7 is a bottom view; 

The ornamental design for an anti-theft alarm for bicycles, as shown and described. 